摘要:
The present invention features a non-human animal model that is susceptible to infection by human hepatotrophic pathogens, particularly human hepatitis C virus (HCV). The model is based on a non-human, immunocompromised transgenic animal having a human-mouse chimeric liver, where the transgene provides for expression of a urokinase-type plasminogen activator in the liver. The invention also features methods for identifying candidate therapeutic agents, e.g., agents having antiviral activity against HCV infection. The animals of the invention are also useful in assessing toxicity of various agents, as well as the activity of agents in decreasing blood lipids.
摘要:
Disclosed herein are compositions and methods for eliciting immune responses against antigens. In particular embodiments, the compounds and methods elicit immune responses against antigens that are otherwise recognized by the host as “self” antigens. The immune response is enhanced by presenting the host immune system with a chimeric antigen comprising an immune response domain and a target binding domain, wherein the target binding domain comprises a xenotypic antibody fragment. By virtue of the target binding domain, antigen presenting cells take up, process, and present the chimeric antigen, eliciting both a humoral and cellular immune response.
摘要:
The present invention features a non-human animal model that is susceptible to infection by human hepatotrophic pathogens, particularly human hepatitis C virus (HCV). The model is based on a non-human, immunocompromised transgenic animal having a human-mouse chimeric liver, where the transgene provides for expression of a urokinase-type plasminogen activator in the liver. The invention also features methods for identifying candidate therapeutic agents, e.g., agents having antiviral activity against HCV infection. The animals of the invention are also useful in assessing toxicity of various agents, as well as the activity of agents in decreasing blood lipids.
摘要:
Disclosed herein are the nucleotide sequences, deduced amino acid sequences as well as methods and compositions necessary to elicit immune responses against chronic Hepatitis B infections in animals and humans. Immune response is enhanced by fusing relevant viral antigens with xenotypic immunoglobulin heavy chain region through a peptide linker and producing the fusion proteins in Baculovirus expression system to incorporate high mannose glycosylation. By virtue of the antibody component, the fusion proteins bind to Fc receptors on the surface of antigen presenting cells, are taken up, processed and derived peptides are presented on MHC Class I, which elicit a CTL (Th1) response. In a similar fashion, due to cross priming and presentation on MHC Class II, will elicit a humoral (Th2) response. In addition, disclosed are the methods of cloning, expression and production of the fusion proteins.
摘要:
The present invention features a non-human animal model of malaria, e.g., Plasmodium, particularly Plasmodium falciparum. The model is based on a non-human, immunocompromised transgenic animal having a human-mouse chimeric liver, where the transgene provides for expression of a urokinase-type plasminogen activator in the liver. The invention also features methods for identifying candidate therapeutic agents, e.g., agents having anti-pathogenic activity against malaria.
摘要:
The present invention provides non-naturally occurring polypeptides that specifically bind hepatitis B virus (HBV) DNA; and polynucleotides encoding the polypeptides. The present invention further provides methods of detecting HBV DNA; methods of detecting a covalently closed circular DNA (cccDNA) form of HBV; and methods for treating HBV infection.
摘要:
The present invention features a non-human animal model that is susceptible to infection by human hepatotrophic pathogens, particularly human hepatitis C virus (HCV). The model is based on a non-human, immunocompromised transgenic animal having a human-mouse chimeric liver, where the transgene provides for expression of a urokinase-type plasminogen activator in the liver. The invention also features methods for identifying candidate therapeutic agents, e.g., agents having antiviral activity against HCV infection. The animals of the invention are also useful in assessing toxicity of various agents, as well as the activity of agents in decreasing blood lipids.
摘要:
The present invention features a non-human animal model that is susceptible to infection by human hepatotrophic pathogens, particularly human hepatitis C virus (HCV). The model is based on a non-human, immunocompromised transgenic animal having a human-mouse chimeric liver, where the transgene provides for expression of a urokinase-type plasminogen activator in the liver. The invention also features methods for identifying candidate therapeutic agents, e.g., agents having antiviral activity against HCV infection. The animals of the invention are also useful in assessing toxicity of various agents, as well as the activity of agents in decreasing blood lipids.
摘要:
The present invention features a non-human animal model that is susceptible to infection by human hepatotrophic pathogens, particularly human hepatitis C virus (HCV). The model is based on a non-human, immunocompromised transgenic animal having a human-mouse chimeric liver, where the transgene provides for expression of a urokinase-type plasminogen activator in the liver. The invention also features methods for identifying candidate therapeutic agents, e.g., agents having antiviral activity against HCV infection. The animals of the invention are also useful in assessing toxicity of various agents, as well as the activity of agents in decreasing blood lipids.
摘要:
The present invention provides non-naturally occurring polypeptides that specifically bind hepatitis B virus (HBV) DNA; and polynucleotides encoding the polypeptides. The present invention further provides methods of detecting HBV DNA; methods of detecting a covalently closed circular DNA (cccDNA) form of HBV; and methods for treating HBV infection.